I felt very relaxed when I reach my rental room. Specially cause I could check in earlier than the normal timing, thanks to Capper mom who gave me another room available. Their rooms and appartments complex is well organised : a 24hrs store with almost everything one need, an open room with washing machines, a nice cafe, a night watchman... The bad point can be the noisy 4 highway just close by.
My room was clean, with a small balcony. The fact that there's no hot water in the bathroom was really not an issue for me, the outside heat and the almost warm running water make it fine. A kettle and a fridge and a large comfortable bed help to feel fine as well.
So, I can only recommend that Airbnb for a short stay in Bangkok.
Thanks to Capper, his family and the pleasant staff who work with them.